Journal
NANO ENERGY
Volume 26, Issue -, Pages 533-540Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2016.06.019
Keywords
Morphology evolution; Nickel foam; Nickel sulfide; Sodium ion batteries
Categories
Funding
- National Natural Science Foundation of China [51572194]
- Key Project of Tianjin Municipal Natural Science Foundation of China [14JCZDJC32200]
- Academic Innovation Funding of Tianjin Normal University [52XC1404]
- LPMT (Laboratory of Precision Manufacturing Technology)
- CAEP (China Academy of Engineering Physics) [KF14006]
- program of Thousand Youth Talents in Tianjin of China
- Natural Science and Engineering Research Council of Canada
- Canada Research Chair Program
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Transition metal sulfides have been treated as promising materials for lithium-ion battery, and recently more and more attention has been paid to its applications in sodium-ion batteries. In our context, three Ni3S2 nanostructures directly grown on Ni foam were successfully designed using a facile hydrothermal method. The influences of the morphology on the performance evolution for sodium-ion batteries were studied in detail. As a result, it was found that the initial drop, gradual increase, convex type decline and concave type decline in the performance evolutions were mainly controlled by R-ct, R-sf, pulverization, and internal stress, respectively. More importantly, our results indicated that the clustered network-like structure was beneficial for the cycling and rate performance, while the rod-like structure was suitable for the cyclic stability of these electrodes. (C) 2016 Elsevier Ltd. All rights reserved.
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